The Internet Assigned Number Authority Header Field Parameter Registry for the Session Initiation Protocol

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Last updated 2003-06-19
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document creates an IANA registry for SIP header field parameters. It also lists the already existing parameters to be used as initial values for that registry. .


Gonzalo Camarillo (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)